Elevator.



Patented Sept. n I900,

E. L. &' G. HAIL. ELEVATOR. (Application Med Dec. 27, 1898.)

3 Sheets$haet l.

\X/ITNESSBS:

No. 657,597. Patented Sept-ll, 190.0;

' E. L. & G. HAIL.

ELEVATOR. (Application filed mcia-l, uses.)

3 Sheets-Sheet 2.

(lo Modal.)

\M Nsssss OMG W.

E. L. &. G. HAIL.

ELEVATOR.

(Application Bled Dec. 27, 1898.)

(No Model.) 3 Sheets-Sheet a,

No. 657,597. Patented Septl'll, I900;-

1 v 6 IPA/ENTERS: away;

"m: Nonms mzns do PHOTOJJTNQ, WAsHINGTON b c UNITED. STATES 1 PATENT OFFICE.

EDWARD L. HAIL AND GEORGE HAIL, or PROVIDENCE, RHODE ISLAND.

ELEVATOR.

SPECIFICATION forming'part of Letters Patent N 0. 657,597, dated September 11, 1900.

Application filed December 2'7, 1898. serial No. 700,368. (No model.) i i To all whom it nuty concern:

Be it known that we, EDWARD L. HAIL and A GEORGE HAIL, of Providence, in the county V a specification.

This invention has relation to elevator safety appliances of the class for preventing movement of the car when a door leading into an elevator-hatchway is partially or entirely open; and it has for its objects the provision of certain improvements in the same for the purpose of rendering the mechanism more .To attain thevarious objects of the inven tion, it consists in a safety appliance or apparatus embodying certain features of construction and relative arrangement of parts, all as illustrated upon the drawings, hereinafter described in detail, and setforth in the appended claims.

Reference is to be had to the accompanying drawings, and to the letters marked thereon, forming apart of this specification, the same letters designating the same parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 represents an elevator plant equipped with our invention. In this figure there is shown a series of corridor-doorsleading into the elevator hatchway or well and a portion of the controlling device for a hoisting mechanism, the same consisting of a pilot-valve and a main valve and means controlled by the door for locking the pilot-valve when one of the doors is open. Fig. 2 represents an enlarged View of the valve and the pilot-valve. Fig. 3 shows in detail thedoor-controlled lock for a movable member of the pilot-valve. Fig. 4 represents a lock-controlling wire and one of the doorcontrolled levers which is connected to the wire by a clip and a chain. Fig. 5 shows in detail the clip to which one end of thechain is connected. Fig. 6 represents a balancelever from one arm of which the line depends. Fig. 7 represents the inventionas being arranged to lock the motorcontrolling-line. Figs. 8, 9, and 9 represent in detail the lock cm the movements of the motor.

for the controlling-line. Fig. 10 illustrates a counterbalancing-lever as provided with an arm to control the lock for the motor-con trol- Fig. 12 represents anshows the lock in position to engage a locking member on the pilot-valve.

Referring tothe drawings, the doors which lead into the hatchway at the landings are indicated at at, those shown in Figs. 1 and 7 being arranged to slide across the openings and those in Fig. 12 being adapted to swing, the doors of this latter class being usually fireproof doors in factories, warehouses, and other similar buildings. The elevator-car is not shown, but it travels up and down the hatchway past the doors in the ordinary way, being generally suspended from one or more cables, which pass over sheaves at the top of the hatchway and are attached to counterbalancing-weights which travel in guides.

The car, so far as some featuresof the invention are concerned, may be raised or lowered by a motor of any suitable kind-such as those operated by steam, hydraulics, or electricitythe motor-controlling means comprising any suitable mechanism, such as one or more lines I), and a movable member, such as a tip-lever or a wheel 1), arranged to gov- In Fig. 1

the motor is shownas being controlled by a rotating the wheel I) and rocking the shaft 0 in one direction or the other fluid is admitted mo to either end of the main hydraulic cylinder or is cut olf therefrom to raise or lower the car or bring it to a state of rest. The parts are so arranged, however, that when the car One end of the last-mentioned lever is 5 theweightimmovable. ficient to slightlymore than counterbalance placed in such position as to enter said notch and prevent the Wheel from rotating when one of the doors is open. Although, as shown in Fig. 1, the lock may directly engage the;

rope-wheel, yet, if desired, we may secure a supplemental locking member 0 to the rockshaft 0 as shown in Figs. 12 and 15, in which event the locking member may be a segment or may bea small arm having a notch a to receivethe lock d, which in this case is a bolt movable in a guide (1 In Figs. 1 and 3, however, the lock for the pilot-valve consists of a bell-crank lever 1, having one arm (1 arranged to enter the notch in the wheel I and having its other arm (1 apertured at its end to be connected to the end of a line e, which extends up the elevator shaft or hatchway, as will be subsequently described. The bellcrank d is fulcrumed on a pivot-stud d pro- 2 5 jecting from a plate (i having provisionsfor permitting its. attachment to a suitable support. A flexible chain connects the end of the bell-crank to the wire or line, 'being'se cured to the latter by a clip, which will 'be 3o subsequently described. Aweightd is hung from the bell-crank,and its tendency i s'to' draw the bent end of the-arm (1 into the notch in the locking member of the pilot-valve, this.

action being prevented so long as the 'doors 3 5 a are closed by the line e,previously referred to. This line extends'up the shaft orhatchway, and it consists of a wire whose upperend is connected to one arm 6 ofa lever fulcrumed on a pivot-stud 6 extending out from aplate e and having its other arm (2 extended and provided with notches e in its upper edge- An adjustable weight 6 is supported upon the arm e and is provided with a set-screw. e to enter any one of the notches eand hold The weight '6 is sufthe. weight of the wire e and the parts supported by it and the tension of-.the weight (i The lever has a third arm 0 which plays between two lugs or stops e on the plate 6 Arranged in thepath of each door ct -there is a bell-crank lever f, each having an arm f, projecting downwardly to be engaged "by a stud, projection, or bracket a on the door'at the last of its closing movement and moved into the position shown in full'lin'es inF-ig. 4. These door-controlled levers each havean arm f which is connected by a flexible connection f? with a clip f adjustably and detachably secured to the wire'e. A plate 9 is provided with apivot-stud g, on which the lever f is fulcru med, 'said plate having two lugs or stops g- .g", between which the arm f lies and which limit the movements thereof, as shown in Fig. 4. In each of the lugsthereiis an aperture (not shown) to receive a detachablescrew .9 to which ajspring gt-is atbya series-of bolts or screws h tached, said spring having its free end engaging'a finger f on thebell-crank lever. Each spring 9 is strong enough to overbalance the weight e and permit the weight d to throw the lock into engagement with the locking member of the pilot-valve when the .door is opened. This construction and arrangement of parts permits the lever to be reversed and the spring to be attached to either of the lugs. The flexible connection f3 consists of a chain formed with a series of connected links, and it is attac hed to the clip f which, as shown in Fig. 5, is formed with a groove to receive the wire 6, said wire being held in the groove by screws f and washers f In this form of the invention just described the may be said to constitute means for directly engaging and looking a movable element or locking member of the pilot-valve or forlocking the controlling rock-shaft 0 by means of which the pilot-valve is governed, said doorcoutrolled levers and the said line e constituting door co'ntrolling devices for the lock.

spring g ,and the'arm f 2 draws upon the flexible connection f to pull the line 6 downward against the tension exerted by the weight 6 topermit the weigh-t d to cause the engagement of the lock withthe locking member of the pilot-valve. As the line e movesdownward the chain's f do not exert pressure upon the other door-controlled levers, butbecome loose-and'slack, as shown in Fig. 11.

' In Figs 7 to 10, inclusive, we have shown another embodiment of the invention, in which th'e-lnotor-controlling means is locked by the openingof one of the doorsn In this ;-case the controlling-line b is providedwith a pair of stops b 19 which are conical at one end, said conical ends pointing-inopposite directions. At some point in the, hatchway, preferably near the top, we secure casing consisting of aplate h, having a cap hflthere "being between the plate and the cap an apertu're h adequate to permit the passage of the clips or stops b 7 The cap is held in place A groove is formed in the plate andcap to receive a locking-plateh, (shown in 9,) which is adaptedto partially close the aperture h and ftherebyiprevent the passage of the movable stops b and consequently prevent the operation of the motor-controlling means. This plate h is formed with a semicircular aper-' ture in,its inner end and at itsouter end is door-controlled levers, the line 6, and the lock provided with transversely-extending lugs h h. The weight h is fulcrumed at 71. on the plate h insuch way as to engage the lug i-h andnormally holdthe locking-plate in the.

it more than counterbalances the latter and holds the locking-plate outward. In this construction the opening of the door draws downward upon the line e, and the weight k is drawn into the position shown in dotted lines inFig. 8 to permit the other weight to operate and cause the locking-plate to be thrown into position to engage the stops on the motor-controlling line. In case one of the doors should be opened while the car is traveling and the locking-plate be thrown into the dotted-line position in Fig. 9 on stopping the car by shifting the valve-controlling means to a neutral position the conical end of the stop will force back the locking-plate and permit it to pass through, although the plate sliding doors, a valve for governing the motive force, a plurality of spring-tensioned elbow-levers engaging said doors, a wire exwill immediately move back again into looking position, so as to prevent the other stop from passing through or the first-mentioned stop from returning.

It is evident that the invention may be employed in connection with swinging doors instead of those that slide horizontally, as shown in Fig. 13, the only change required being that a. pin it is attached to each one of the door-controlling levers and a lug or bracket is secured to one of the doors to engage said pin, as shown in Fig. 14. It is also evi dent that various parts of this safety appliance may be employed separately, and consequently it will be understood that we are not limited to employing them all together. We may also employ electrical means between the door and lock for locking the controlling device, such means being now well known.

We have employed the term door as meaning an. obstruct-ion of any kind to prevent passage through a doorway and intend to include therein gates, bars, extensile and contractile gratings, and other similar forms.

Parts of this invention are applicable to elevator systems in which the hoisting mechanism consists of an electric motor, so that the lock engages a movable controlling member of the motor to out off the current or to hold the said member in a neutral position.

Having thus explained the nature of the in; vention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, we declare that what we claim is- 1. In an elevator, a plurality of doors, amotor-controlling line having stops, a lock for said line having a sliding locking-plate, a lever having one arm connected to said plate, a line connected to said lever, and a lever coacting with each door and flexibly connected with said last-mentioned line.

2. In an elevator, a plurality of doors, a motor-controlling line having stops, a lock for said line having a sliding locking member, a three-armed lever having one arm weighted, and a second arm connected with the said member, a line connected to the third arm of said lever, and a plurality of door-controlled levers flexibly connected with the last-mentioned line.

3. In an elevator, a plurality of laterallysliding doors, a valve for governing the motive force, a plurality of door-controlled levers adapted to directly engage said doors, a wire extending from the top to the bottom of the elevator-well and connected to said levers, to move downward when any one of said levers is actuated by the opening of the door adjacent thereto, means independent of said levers for overbalancing said wire when the doors are closed, and a lock connected to the wire and adapted to look a movable member 10f the valve.

4. In an elevator, a plurality of laterallytending from the top to the bottom of the elevator-well and connected to said levers, a lock connected to said wire to look a movable member of the valve against movement when any one of the doors is opened, and a weighted lever for yieldingly supporting the said wire and permitting it to be pulled downward by any one of said levers.

5. In an elevator, a plurality of laterallysliding doors, a valve for governing the motive force, a plurality of door-controlled levers adapted to directly engage said doors, a wire extending from the top to the bottom of the elevator-well and adapted to be pulled downward by any one of said levers, a lock for said valve connected to said wire, yielding means independent of the levers for supporting the said wire, and flexible connections between said levers and said wire.

6. In an elevator, a plurality of laterallysliding doors, motor-controlling means, a lock for said controlling means, a wire extending past said doors and arranged to control said look, a plurality of clips adjustably attached to said wire, a plurality of door-controlled levers, and yielding means connecting each lever with one of said clips;

ling the main valve of the hoisting mechanism, a locking member connected to a movable part of said pilot-valve, a lock arranged to engage said locking member, a line connected to said lock to hold it out of engagement with said member, a counterbalance for said line and said look, a plurality of elbowlevers, connections between said levers and said line, and a plurality of laterally-sliding doors directly engaging said levers.

8. An attachment constituting part of a safety appliance for elevators, the same consisting of a plate having a pivot-stud, and two lugs or stops, a lever fulcrumed on said stud and having an arm lying between said lugs or stops, and a spring detachably secured to one of said lugsand to said lever, said parts being constructed and arranged whereby said lever can be reversed and the spring attached to the other of said lugs.

for the motor-controlling means, a linefor'c'om trolling said lock and governed by the doors, a two-armed lever from one arm of which the line depends, and a weight adj ustably secured to the other arm, which is notched to receive it.

10. A locking device for a motor-controlling line having stops, the same consisting of a casing having an aperture adequate to permm; the passage of sa1d stops, a yieldinglyoperated locking-plate adapted to close said means for operating said plate, said means 2 controlled by the adapted to partially'close' the said aperture,

a weight for moving said member to operative position, and a snperiorly-weighte'd device door, for holding the memv ber in inoperative position. 9. In an elevator safety appliance, a lock '12. A locking device for a motor-controlling line having stops, the same consisting of a casing having an aperture adequate to permit the passage of-said stops, a yieldinglyoperated locking-plate adapted to partially close said aperture and engage one -of said istops, and 'means; for operatingsaid plate,

said means consistingof two oppositely-acti'ing Weightseach being pivotally mounted ,and engaging said plate, one of said weights being greater than the other.

aperture and engage one of said stops, and

In testimony whereof we have afliXed our j signatures in presence of two witnesses. consisting of two oppositely-acting weights. q

11. In an elevator the combination with a line having stops, a casing having an aperture adequate to permit the passage of said stops, a yieldingly-operated locking member 5 EDWARD L. HAIL. GEORGE HAIL. o Witnesses: I CHARLES A. HARKNESS, GILMAN ELJ OPP. 

